Gasifier for internal-combustion engines.



G. A. DUBOIS.

GASIFIER FOR INTERNAL COMBUSTION ENGINES. APPL1cAT|oN FILED 11111.29. 1914. I1ENEwEn-rE.3.1916.

Patent-edSept. 5, 1916.

I1 El Y aww.,

fr a "ra rip.

GEORGE A. DUBOIS, OF NORFOLK, VIRGINIA, ASSIGNOR TAO DUBOIS GASIFIER CORPORA.-

TION', OF NORFOLK, VIRGINIA, A CORPORATION 0F VIRGINIA.

GASIFIER FOR INTERNAL-COMBUSTION ENGINES.

speiacation of Letters Patent.

Patented Sept. 5, 1916.

Applicationled January 29, 1914, 'Serial No. 815,246. Renewed February 3, 1916. Serial N o. 76,071.

To all 'whom 'it may concern Be it known that I, GEORGE A. DUBOIS, a citizen of the United States, residingat Norfolk, in the countyof Norfolk and State of Virginia, have invented certain new andv useful Improvements in Gasifiers for Internal-Combustion Engines, of which the following is a specification.

My invention relates to gasiiiers of liquid hydrocarbon for internalr combustion engines.

The object of the invention is toprovide means whereby liquid fuel, more particularly kerosene or other heavy carbon oil may 'be vaporized and' then transformed into a gas for operating internal combustion or hydrocarbon engines or motors.

Further objects vand advantages will. be more fully described herein and specifically pointed out in the hereunto annexed claims recourse being had to 'the accompanying drawing forming a 'part of this specification in which g Figure l is an elevation of the assembled broken away to show a` part of its interior. Fig. 2 is a sectional plan ofthe interior .of the lower section or element of the gasier. Fig. 3 is a cross section on the lines 1 2 in Fig. 1. Fig. 4 is an end view of the discharging or exhaust end, and Fig. 5 shows connection to the gasifier with a gasolene carbureter when it is desired to use both kerosene and gasolene.

In the drawing like reference numerals indicate similar parts in all the several views.

1 is the upper sectionof the casing'or l,

shell and is provided with a fia'nge or flanges and a head or cover, as at 2.

3 is the lower portionor half of the casing and is adapted to be united to the upper section 1 by means of suitable bolts passing through ears or lugs thus securing the two halves firmly together as shown in Fig. 1.

4 is an enlarged portion or expansion end of the two sections 1-3 and is arranged so /as to be eccentric vto the axis of the cylinder or barrel part of the united sections 1-3.

5 is the hydrocarbon or liquid fuel intake for supplying the device with kerosene or other carbon oil. l

The oil when it enters the gasiierois first vaporized and then changed to a gas, as will be describedv hereafter.

6 is the for the gas which is led to the gas engine for its supply of fuel. The outlet 6 is provided with a suitable controlling valve so that the supply may be regulated at will. By suitable means I may arrange to have a sliding joint for the discharge pipe so that it may be entered and withdrawn from the portion 4 for convenience in applying my device to an engine.

7 is an inwardly opening air valve for mixing a suiicient amount of air with the gas which is necessary for its combustion. The valve 7 is provided .with suitable spring and adjustment means for the proper regulation of the air.

8 are a series of semi-circular or elliptic baffle plates arranged at suitable intervals in each half of the casing, 13, but when the two sections are unitedthey form circular or eccentric defiector rings 'or plates and surround the hereinafter described exhaust pipe or heating Hue.

9 is the heater pipe or exhaust fine pass- 1 device with a portion of shell or casingwing through the casing 1-3 and having outwardly extending ends, as at 10 and 11, the said ends being the exhaust inlet from an engine and the other the exhaust discharge to the atmosphere, respectively.

l2 are a series of circular' or elliptic shaped flanges, rings or bailie plates formed upon the pipe or heater flue 9 and lare adapted to come between the plates or rings gas outlet or throttling discharge 8 and 4form,passages therewith which act as expansion pockets for the vapor and gas between them' and under the latter, as at 13 in Fig. 2. By this means a' continuous sinuous passage is formed from one end of the casing 1-3 to the other permitting the oil to come in contact with surfaces of various temperatures as to rst vaporize the oil and then gasify it.

14- is an enlargement nearly surrounding the discharge end of the heater pipe 9 and having a flange 15 and is adapted to eonform to and be attached to a similarly shaped cap 16 which surrounds the pipe 9 exterior to the discharge end of the casing or cylinder 1 3. The portions 14C and 16 form a water jacket for cooling the gas and to prevent spontaneous combustion thereof. 17 are nuts adapted to securelthel casing 1-'-3, the heater pipe 9, and the iflange and cover 2 firmly together. l l

. may replace that at 6 in applying thedevice to an engine and Where it is desira le or necessary to use a side connection instead of at the bottom as in Fig. l. v

2l is aprimin cup connection for the oil in cases where t e device is first started up and generally precedes the full opening of Y the oil inlet or supply 5.

When starting up the gasifeLit is necessary to heat the saine and this I do by a suitable torch or burner attachment but such details I do not show they being no part of my invention. The exhaust of the engine passing through the flue or pipe 9y heats the oil and gas in the circuitous path along the hot retort plates 8 and l2. v

As shown, the pipe 9 does 4not pass through the centers ot' the plates l2, nor are the passages', as lat 13, in the centers 'of the plates 8, though I may arrangethem in concentric order instead of eccentric, as may be desired. When the plates are eccentrically disposed to the pipe 9 there is more space above the pipe than below (fig. 8), so as toallow full expansion of the gas intits path to the outlet.

' Between a suction impulse of the engine to be supplied, the oil is vapor-ized and drawn through the described passages to the middle portion of the same and held until a previous supply of they gas is en-` ploded in the engine after which' 'the oillis gasied in time for the next suction imp se of the engine and is consequently drawn to/ inplete the cycle of operation of the.v enlne continuously. At the left hand endfo the gasiier the oil enters and'is vaporized,

at the middle thereof the oil changes into a true gas and at their-ight hand end, as at- 4, the gas is cooled and mixed with air preparatory to being discharged; hence the device has three stagesot' operation before the transformed oil reaches the' engine to be supplied. i

Ae shown in Fig. 5, the valve connection, as at 6, may be connected to a "l" or otherY pipe. The vertical member 22 may be connected to an ordinary carb'ureter, as at 23, Whose outlet :24 is'connected to the cylinderof a hydrocarbon engine 25. In this manner the kerosene or heavy carbon oil may be supplemented by gasolene vapor, at Will;

I claim:

1. A device of the class described, coniu posed of a casing or cylinder having rings cast thereon, a cylinder or heater flue having ,rings thereon, said rings adapted to come between the first named rings to form annular circuitous passages, and a water jacket formed on said flue and disposed partly withiir and partlykwithout said cascasing, a heater flue passing through the casing provided `with baille rings or plates 'adapted to form passages with the vfirst =named rings or plates, and throttle valve controlling means for the gas outlet of said casing.

:ranged baie plates lor rings therein, a heater flue arranged to be surrounded by said baille plates or rings, said flue having eccentrically arranged plates or rings disposed t0 come between the first named platos or rings, an eccentric enlargement on the casing, a water cooler 01 jacket formed by said eccentric end and one end of said heater lflue, 4and throttle valve controlling outlet. means for said casing.

'4. A device of the class described, comsei-ies of bullies disposed between said cas ing and said tube, said casing having an inlet opening at one end and a gas discharge device of the class described, c0m' posed of a casing having eccentrically` urposed of an o'uter casing, un inner tube, a

outlet at the other end, and a Water jacket disposed between the =casingand the tube at the discharge end of the casing for cooling the gas.

5. A device of the class described, coinposed of an outer casin an inner tube,` a. series of baffles dispose between said casing and said tube, said casing having an inlet openin at one end and a gas discharge outlet at t e other 3nd, and a water jacket disposed between the casing and the tube at the discharge end of tliecasing for cooling the gas,'said Water 'acket having an inlet for Water and-an out etv discharginginto the innertube. i

In testimony. where f I have hereunto affixed inysignature in the presence of two witnesses.

vencuen A. Dunois.v

"Witnesses:

lifaifrnii B. Bimiioiv, Tiros, E. Timon. 

